Amazon is going to have a tough time breaking into the online grocery market

“The failure of online grocery sales has been a two-decade nightmare for the online gorillas” writes Wolf Richter for businessinsider.com. A plethora of startups, brick-and-mortar retailers, and online retailers have tried it, including the biggest gorillas of all — Walmart, Amazon, and Google.Maybe it has figured out, despite all the money it has thrown at it, that selling groceries online is a very tough nut to crack.Online sales in other products are skyrocketing and wiping out the businesses of brick-and-mortar retailers along the way.Maybe Amazon has figured out that you’re not the only one who isn’t buying groceries online.